FILINGS
| PRKR 0000914139 | |||
|---|---|---|---|
| Filing Date | Form Type | Description | Document |
| 2018-04-13 | 8-K | 8-K | View Document |
| 2018-04-05 | 8-K | 8-K | View Document |
| 2018-03-29 | 10-K | 10-K | View Document |
| 2018-03-27 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-27 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-27 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-27 | 8-K | View Document | |
| 2018-03-23 | 8-K | 8-K | View Document |
| 2018-03-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-03-02 | 4 | PRIMARY DOCUMENT | View Document |
| 2018-02-16 | 8-K | 8-K | View Document |
| 2018-02-14 | 5 | PRIMARY DOCUMENT | View Document |
| 2018-02-14 | SC 13G | View Document | |
| 2018-02-14 | 5 | PRIMARY DOCUMENT | View Document |
| 2017-12-29 | 8-K | View Document | |
| 2017-12-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-12-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-12-04 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-12-04 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-12-04 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-12-04 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-11-28 | 424B3 | View Document | |
| 2017-11-27 | EFFECT | View Document | |
| 2017-11-14 | 10-Q | 10-Q | View Document |
| 2017-10-31 | S-1 | View Document | |
| 2017-10-18 | 8-K | View Document | |
| 2017-09-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-09-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-09-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-09-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-09-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-09-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-18 | 8-K | 8-K | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-08-14 | 8-K | 8-K | View Document |
| 2017-08-14 | 424B5 | 424B5 | View Document |
| 2017-08-14 | 10-Q | 10-Q | View Document |
| 2017-08-14 | 8-K | 8-K | View Document |
| 2017-07-28 | 3 | PRIMARY DOCUMENT | View Document |
| 2017-07-13 | 8-K | 8-K | View Document |
| 2017-06-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-06-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-06-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-06-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-06-05 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-05-22 | DEF 14A | DEF 14A | View Document |
| 2017-05-15 | 10-Q | 10-Q | View Document |
| 2017-05-11 | DEFA14A | DEFA14A | View Document |
| 2017-05-11 | PRE 14A | PRE14A | View Document |
| 2017-05-10 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-04-28 | 10-K/A | 10-K/A | View Document |
| 2017-04-28 | 8-K | View Document | |
| 2017-03-30 | 10-K | 10-K | View Document |
| 2017-03-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-03-17 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-03-13 | 8-K | View Document | |
| 2017-03-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-03-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-03-03 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-02-27 | 8-K | View Document | |
| 2017-02-24 | 4 | PRIMARY DOCUMENT | View Document |
| 2017-02-14 | 5 | PRIMARY DOCUMENT | View Document |
| 2017-02-14 | 5 | PRIMARY DOCUMENT | View Document |
| 2017-02-14 | 5 | PRIMARY DOCUMENT | View Document |
| 2017-02-14 | SC 13G/A | View Document | |
| 2017-02-14 | SC 13G/A | FEBRUARY 14, 2017 | View Document |
| 2017-02-01 | SC 13G/A | View Document | |
| 2017-01-20 | 8-K | View Document | |
| 2016-12-30 | 424B5 | View Document | |
| 2016-12-30 | 8-K | View Document | |
| 2016-12-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-12-19 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-12-19 | 3 | PRIMARY DOCUMENT | View Document |
| 2016-12-19 | 3 | PRIMARY DOCUMENT | View Document |
| 2016-12-13 | 8-K | View Document | |
| 2016-12-12 | SC 13G/A | SEC SCHEDULE 13G | View Document |
| 2016-12-06 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-12-06 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-12-06 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-11-30 | EFFECT | View Document | |
| 2016-11-29 | CT ORDER | View Document | |
| 2016-11-28 | CORRESP | View Document | |
| 2016-11-14 | 10-Q | View Document | |
| 2016-11-14 | S-3 | View Document | |
| 2016-11-14 | S-8 | View Document | |
| 2016-11-03 | SC 13G | View Document | |
| 2016-09-06 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-09-06 | 4 | PRIMARY DOCUMENT | View Document |
| 2016-09-06 | 4 | PRIMARY DOCUMENT | View Document |
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